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//===- MIParser.h - Machine Instructions Parser ---------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the function that parses the machine instructions.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIB_CODEGEN_MIRPARSER_MIPARSER_H
#define LLVM_LIB_CODEGEN_MIRPARSER_MIPARSER_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringRef.h"
namespace llvm {
class BasicBlock;
class MachineBasicBlock;
class MachineInstr;
class MachineFunction;
class MDNode;
struct SlotMapping;
class SMDiagnostic;
class SourceMgr;
struct PerFunctionMIParsingState {
DenseMap<unsigned, MachineBasicBlock *> MBBSlots;
DenseMap<unsigned, unsigned> VirtualRegisterSlots;
DenseMap<unsigned, int> FixedStackObjectSlots;
DenseMap<unsigned, int> StackObjectSlots;
DenseMap<unsigned, unsigned> ConstantPoolSlots;
DenseMap<unsigned, unsigned> JumpTableSlots;
};
/// Parse the machine basic block definitions, and skip the machine
/// instructions.
///
/// This function runs the first parsing pass on the machine function's body.
/// It parses only the machine basic block definitions and creates the machine
/// basic blocks in the given machine function.
///
/// The machine instructions aren't parsed during the first pass because all
/// the machine basic blocks aren't defined yet - this makes it impossible to
/// resolve the machine basic block references.
///
/// Return true if an error occurred.
bool parseMachineBasicBlockDefinitions(MachineFunction &MF, StringRef Src,
PerFunctionMIParsingState &PFS,
const SlotMapping &IRSlots,
SMDiagnostic &Error);
/// Parse the machine instructions.
///
/// This function runs the second parsing pass on the machine function's body.
/// It skips the machine basic block definitions and parses only the machine
/// instructions and basic block attributes like liveins and successors.
///
/// The second parsing pass assumes that the first parsing pass already ran
/// on the given source string.
///
/// Return true if an error occurred.
bool parseMachineInstructions(MachineFunction &MF, StringRef Src,
const PerFunctionMIParsingState &PFS,
const SlotMapping &IRSlots, SMDiagnostic &Error);
bool parseMBBReference(MachineBasicBlock *&MBB, SourceMgr &SM,
MachineFunction &MF, StringRef Src,
const PerFunctionMIParsingState &PFS,
const SlotMapping &IRSlots, SMDiagnostic &Error);
bool parseNamedRegisterReference(unsigned &Reg, SourceMgr &SM,
MachineFunction &MF, StringRef Src,
const PerFunctionMIParsingState &PFS,
const SlotMapping &IRSlots,
SMDiagnostic &Error);
bool parseVirtualRegisterReference(unsigned &Reg, SourceMgr &SM,
MachineFunction &MF, StringRef Src,
const PerFunctionMIParsingState &PFS,
const SlotMapping &IRSlots,
SMDiagnostic &Error);
bool parseStackObjectReference(int &FI, SourceMgr &SM, MachineFunction &MF,
StringRef Src,
const PerFunctionMIParsingState &PFS,
const SlotMapping &IRSlots, SMDiagnostic &Error);
bool parseMDNode(MDNode *&Node, SourceMgr &SM, MachineFunction &MF,
StringRef Src, const PerFunctionMIParsingState &PFS,
const SlotMapping &IRSlots, SMDiagnostic &Error);
} // end namespace llvm
#endif
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